- Track subject checkbox: auto-adjusts crop center per sub-clip using
YOLOv8-nano detection on each start frame
- Detects target nearest to user's crop click, follows same class across clips
- Graceful fallback when ultralytics not installed or detection fails
- Fix end-frame preview not updating on clip/spread change (retry on busy grabber)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Ethanfel